House #11 is marked on the 1938 map: https://gwulo.com/node/46976?a=1#18/22.20391/114.03827/Map_by_ESRI-1938…
There's a house there on the modern ESRI layer too, but it's not clear if it's the original or a modern re-build: https://gwulo.com/node/46976?a=2#18/22.20391/114.03827/Map_by_ESRI-1938…
It may be the building shown at top right in this photo:
Photos of #11 House
The finishes and tiles of this house is in pre-war style.
It might be used as a holiday camp some time ago.
("Latin: Maria Auxilium Christianorum, ora pro nobis" from google, Selesian of Don Bosco website)